#include<iostream>
#include<sstream>
#include<cstdlib>
#include<math.h>

using namespace std;

int main(int argc,char * argv[]){
  if(argc<2) {
    cerr<<"Usage: <input cols>\n";
    return 1;
  }
  int arg=0;
  int cols = atoi(argv[++arg]);
  float vec[cols];
  string line;
  while(getline(cin,line)){
    istringstream iss(line);
    for(int j=0;j<cols;++j){
      iss>>vec[j];
    }
    char * charvec = reinterpret_cast<char *>(vec);
    long unsigned int outlen = sizeof(float) * cols;
    cout.write(charvec,outlen);
  }
  return 0;
}
